The phrase "an invaluable record" is correct and usable in written English.
It can be used when referring to a record or documentation that is extremely valuable or important for reference or historical purposes.
Example: "The archives contain an invaluable record of the city's history, detailing events that shaped its development."
Alternatives: "a priceless record" or "an essential record".
It will be an invaluable record of Irish history treasured by future generations.
The Tachyon publication, a more thoroughly edited and fact-checked version, provides an invaluable record of Dick's Marin County years.
Hyde Park Gate News is an invaluable record of the day-to-day activities of this exceptional late-Victorian family.
His unadorned factual accounts have supplied many other authors and reporters with an invaluable record of what happened and what was said at pivotal junctures during this presidency.
He likens species to letters that make up the volumes of Earth's history, and their loss obliterating an invaluable record of the past.
However, many people present thought it profoundly moving, and for this reason the film is an invaluable record of a significant occasion.
What we choose to print, even "Mein Kampf" itself, becomes a part in our invaluable record of errors and triumphs.
Jessica Stern, a terrorism scholar at Harvard, says that Fadl's testimony in the Embassy-bombing trials created an invaluable public record.
While the magazine's archive has become an invaluable oral record of the art world over the last four decades, Mr. Furlong said it didn't begin with such ambitions.
Thus, even if Adolf Eichmann was miscast as a grand villain, he argues, his trial was a success because it raised public consciousness of the Holocaust, encouraged an outpouring of previously unknown survivors' stories and created an invaluable historical record.
The confessions the F.B.I. agents elicited, and the trial itself, which ended in May , 2001 created an invaluable public record about Al Qaeda, including details about its funding mechanisms, its internal structure, and its intention to obtain weapons of mass destruction.
